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Finding the Fourth Proportional to 680.10, 938.27 and 443.97

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Solution

The fourth proportional to 680.10, 938.27 and 443.97 is: 612.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    680.10 : 938.27 = 443.97 : x
  2. Step 2: Convert to fraction form
    680.10/938.27 = 443.97/x
  3. Step 3: Cross multiply
    680.10x = 938.27 × 443.97
  4. Step 4: Simplify right side
    680.10x = 416,563.73
  5. Step 5: Solve for x
    x = 416,563.73/680.10
  6. Step 6: Final answer
    x = 612.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.